Basic characteristics of each soil type # fig2, fig.height = 3, fig.width = 3, fig.align = “center”

Soil respired CO2-13C ()

Respiration Rate Over Time

Mineralization and Mineralization Rate Over Time

Cumulative Soil Derived CO2-C over time (Control v Glutamic Acid)

Respired C Source over time “Base” Respiration is the control (+H2O) respiration. Base + primed = total soil derived CO2 Base + primed + amendment = total CO2 respired

Bar plots cumulative to 168 hrs

DOC relationship with respired C Strong relationship between DOC and control respiration (except for LATR eCO2) Weaker relationship between DOC and glutatmic acid soil resp or primed C

Potentially useful other comparisons